Attack on an Identity-Based Signcryption Scheme

摘要：

Recently, Yu et al.14 have propose an identity based signcryption scheme, and claimed that their scheme is semantically secure against chosen ciphertext attacks and existentially unforgeable against chosen message attacks without random oracles. However, in this paper, by presenting concrete attacks, we show that their scheme is neither semantically secure nor existentially unforgeable in their security model.

关键词： Identity based signcryption Semantic security Existential unforgeability

作者: Xi Zhang An Chen

作者单位: College of Computer and Software, Shenzhen University, Shenzhen 518060, P.R. China

会议类型: 国际会议

会议名称: 2011 3rd International Conference on Computer Engineering and Applications(2011第三届计算机工程与应用国际会议 ICCEA2011)

会议地点: 海口

会议语种:英文

页码: 270-273

在线出版日期: 2011-07-15（万方平台首次上网日期，不代表论文的发表时间）